Question

10X²+101XY+10Y²＝736怎么算

Answer 1

(10x+y)(x+10y)=736=23*32

x=2

y=3

或者

y=2

x=3

x=5-y

代入式子

直接解除来

(50-9y)(5+9y)=736

81y^2-405y+486=0

9y^2-45y+54=0

y^2-5y+6=0

y=2 y=3

x=3 x=2